1 Esdras 7:9-11

New Revised Standard Version, Anglicised

⁹ and the priests and the Levites stood arrayed in their vestments, according to kindred, for the services of the Lord God of Israel in accordance with the book of Moses; and the gatekeepers were at each gate.

The Passover

¹⁰ The people of Israel who came from exile kept the passover on the fourteenth day of the first month, after the priests and the Levites were purified together. ¹¹ Not all of the returned captives were purified, but the Levites were all purified together,^[a]